格式:pdf
大小:367KB
頁數(shù):
以云南蘭坪低品位氧化鋅礦及其循環(huán)浸出渣的浮選精礦為原料,常溫常壓下在MACA(金屬氨絡(luò)合物)體系中進(jìn)行循環(huán)浸出。浸出液先凈化除砷和銻、再兩段鋅粉逆流置換深度凈化,兩次凈化后液電積制取電解鋅。考察工藝中循環(huán)浸出率、凈化率、物質(zhì)平衡以及電解鋅質(zhì)量和電耗等技術(shù)經(jīng)濟(jì)指標(biāo)。結(jié)果表明:先用MACA法處理原礦粉,再浮選硫化鋅的選冶結(jié)合流程是合適的蘭坪低品位氧化鋅礦的處理方案,原礦鋅的平均浸出率為70.48%,其氨可溶鋅浸出率達(dá)到89.14%,浮選精礦鋅的浸出率為79.75%,雜質(zhì)元素的凈化率達(dá)到95%,電解鋅純度達(dá)到99.98%,電流效率可達(dá)97.02%。
格式:pdf
大?。?span class="single-tag-height">100KB
頁數(shù): 6頁
ZnO–PbO–B2O3 glassesas gamma-ray shielding materials Harvinder Singh a, Kulwant Singh a, Leif Gerward b, * , Kanwarjit Singh c, Hari Singh Sahota d , Rohila Nathuram e a Department of Physics, Guru Nanak Dev University, Amritsar-143005, Punjab, India b Department of Physics, Technical University of Denmark, Building 307, DK-2800 Kgs. Lyngby, Denmark c Department of Applied Physics, Guru Nanak Dev